Add option to increase limit for request chunk data packet

src/main/java/com/moulberry/axiom/AxiomPaper.java

@@ -71,6 +71,7 @@ public class AxiomPaper extends JavaPlugin implements Listener {
             this.getLogger().warning("Invalid value for unsupported-axiom-version, expected 'kick', 'warn' or 'ignore'");
         }
 
+        boolean allowLargeChunkDataRequest = this.configuration.getBoolean("allow-large-chunk-data-request");
         this.logLargeBlockBufferChanges = this.configuration.getBoolean("log-large-block-buffer-changes");
 
         List<String> disallowedBlocks = this.configuration.getStringList("disallowed-blocks");
@@ -123,9 +124,11 @@ public class AxiomPaper extends JavaPlugin implements Listener {
         if (configuration.getBoolean("packet-handlers.set-editor-views")) {
             msg.registerIncomingPluginChannel(this, "axiom:set_editor_views", new SetEditorViewsPacketListener(this));
         }
+        if (!allowLargeChunkDataRequest) {
             if (configuration.getBoolean("packet-handlers.request-chunk-data")) {
                 msg.registerIncomingPluginChannel(this, "axiom:request_chunk_data", new RequestChunkDataPacketListener(this));
             }
+        }
         if (configuration.getBoolean("packet-handlers.spawn-entity")) {
             msg.registerIncomingPluginChannel(this, "axiom:spawn_entity", new SpawnEntityPacketListener(this));
         }
@@ -145,6 +148,8 @@ public class AxiomPaper extends JavaPlugin implements Listener {
         if (configuration.getBoolean("packet-handlers.set-buffer")) {
             SetBlockBufferPacketListener setBlockBufferPacketListener = new SetBlockBufferPacketListener(this);
             UploadBlueprintPacketListener uploadBlueprintPacketListener = new UploadBlueprintPacketListener(this);
+            RequestChunkDataPacketListener requestChunkDataPacketListener = allowLargeChunkDataRequest ?
+                new RequestChunkDataPacketListener(this) : null;
 
             ChannelInitializeListenerHolder.addListener(Key.key("axiom:handle_big_payload"), new ChannelInitializeListener() {
                 @Override
@@ -164,7 +169,7 @@ public class AxiomPaper extends JavaPlugin implements Listener {
                     Connection connection = (Connection) channel.pipeline().get("packet_handler");
                     channel.pipeline().addBefore("decoder", "axiom-big-payload-handler",
                         new AxiomBigPayloadHandler(payloadId, connection, setBlockBufferPacketListener,
-                            uploadBlueprintPacketListener));
+                            uploadBlueprintPacketListener, requestChunkDataPacketListener));
                 }
             });
         }

src/main/java/com/moulberry/axiom/packet/AxiomBigPayloadHandler.java

@@ -16,17 +16,20 @@ public class AxiomBigPayloadHandler extends ByteToMessageDecoder {
 
     private static final ResourceLocation SET_BUFFER = new ResourceLocation("axiom", "set_buffer");
     private static final ResourceLocation UPLOAD_BLUEPRINT = new ResourceLocation("axiom", "upload_blueprint");
+    private static final ResourceLocation REQUEST_CHUNK_DATA = new ResourceLocation("axiom", "request_chunk_data");
     private final int payloadId;
     private final Connection connection;
     private final SetBlockBufferPacketListener setBlockBuffer;
     private final UploadBlueprintPacketListener uploadBlueprint;
+    private final RequestChunkDataPacketListener requestChunkDataPacketListener;
 
     public AxiomBigPayloadHandler(int payloadId, Connection connection, SetBlockBufferPacketListener setBlockBuffer,
-            UploadBlueprintPacketListener uploadBlueprint) {
+            UploadBlueprintPacketListener uploadBlueprint, RequestChunkDataPacketListener requestChunkDataPacketListener) {
         this.payloadId = payloadId;
         this.connection = connection;
         this.setBlockBuffer = setBlockBuffer;
         this.uploadBlueprint = uploadBlueprint;
+        this.requestChunkDataPacketListener = requestChunkDataPacketListener;
     }
 
     @Override
@@ -63,6 +66,15 @@ public class AxiomBigPayloadHandler extends ByteToMessageDecoder {
                             in.skipBytes(in.readableBytes());
                             return;
                         }
+                    } else if (requestChunkDataPacketListener != null && identifier.equals(REQUEST_CHUNK_DATA)) {
+                        ServerPlayer player = connection.getPlayer();
+                        if (AxiomPaper.PLUGIN.canUseAxiom(player.getBukkitEntity())) {
+                            requestChunkDataPacketListener.onPluginMessageReceived(identifier.toString(), player.getBukkitEntity(),
+                                buf.array());
+                            success = true;
+                            in.skipBytes(in.readableBytes());
+                            return;
+                        }
                     }
                 }
             } catch (Throwable ignored) {
@@ -86,7 +98,7 @@ public class AxiomBigPayloadHandler extends ByteToMessageDecoder {
         if (evt == ConnectionEvent.COMPRESSION_THRESHOLD_SET || evt == ConnectionEvent.COMPRESSION_DISABLED) {
             ctx.channel().pipeline().remove("axiom-big-payload-handler");
             ctx.channel().pipeline().addBefore("decoder", "axiom-big-payload-handler",
-                                               new AxiomBigPayloadHandler(payloadId, connection, setBlockBuffer, uploadBlueprint));
+                                               new AxiomBigPayloadHandler(payloadId, connection, setBlockBuffer, uploadBlueprint, requestChunkDataPacketListener));
         }
         super.userEventTriggered(ctx, evt);
     }

src/main/resources/config.yml

@@ -14,6 +14,9 @@ allow-teleport-between-worlds: true
 # Whether to allow clients to save/load/share blueprints through the server
 blueprint-sharing: false
 
+# Allow large chunk data requests, not recommended for public servers
+allow-large-chunk-data-request: false
+
 # Action to take when a user with an incompatible Minecraft version or Axiom version joins
 # Valid actions are 'kick', 'warn' and 'ignore'
 # 'warn' will give the player a warning and disable Axiom